Drier



Nov. 20; 1928. r 1,692,749

' A. J. LURRY DRIER Fil 4 Sheets-Sheet l INVENTOR.

ATTORNEY) 4 she e ts-shee t IN VEN TOR.

DRIER Aa J. LURRY Filed Jan. 26, 1928 GQGGGQQQQ .Nov. 20, 1928.

ATTORNESQ" Patented No). 20, 1928..

PATENT OFFICE.

AIBNER J'UDSON LURRY, OF NEW ORLEANS, LOUISIANA.

DRIER.

Application aia January 26, 1928. Serial No. 249,717.

The present invention relates to improvements in driers, and more particularly refers to a drier useful when drying woven, braided or twisted fabrics, such ascloth, yarn,rope etc.

Such material requires drying after being saturated with dye or wax compounds, and it is an object of the invention to provide a compact and simple form of drier for receiving and containing at the same time a great linear amount of such material, whereby the entire amount may be subjected at once to the drying atmosphere within the drying chamber.

Other objects of the invention are to provide an improved form of cellular drying chamber, to secure an active circulation of hot air, or other drying medium throughout a all the cells ,of the chamber, and to provide an improved driving mechanism for the web supporting rollers and the blast fan.

Vith the foregoing and other objects in view, the invention will be more fully described hereinafter, and will be more particularly pointed out in the claims appended hereto.

In thedrawings, wherein like symbols refer to like or corresponding parts throughout the several views,

- Figure 1 is a top plan view, withparts broken away, and the driving belts omitted, of an apparatus constructed in accordance with the present invention. 1

Figure 2 is a longitudinal section taken vertically through the apparatus.

' Figure 3 is a fragmentary side elevation showing" the "arrangement for driving the rollers. a

Figure 4 is a qross section taken on the line 4.4 in Figure 2, and

Figure 5 is a similar view taken on the line 5-5 also in Figure 2.

Referring more particularly to the drawings 6 designates the top'of the drying chamber, 7 the bottom, 8 and 9 the end walls and 10 and 11 the side walls thereof. This dry- I ing chamber may be of any suitableform and of appropriate length, height and width to accommodate a quantity of the material to be formed which is shown in the-form of a web 12. This web is received into the drying chamber at the lower portion of the end wall 8 as shown in Figure 2, feed rollers 13 and 14 being provided to receive the web.

Thereafter, the web is passed into the chamber and circulated in a number of superposed runs or traverses, and each traverse being stepped upwardly. until the up er portion of the drying chamber is reached from which the web is conveyed off at the upper portion 'of the opposite end wall 9, the web carried about the rollers 15 and 16 and'thence to its destination. Near the endwall 8 are the idler rolls 17 arranged in a substantially vertical bank to receive the web'12 at this end. In a similar way adjacent the opposite end wall9 is a substantially vertical bank of drive rollers 18, the shafts of which are extended upon the exterior side Wall 11, as shown in Figure 3, where they are provided with the pairs of friction wheels 18 disposed in engagement with the'endless drive belt 19. Between the pairs of friction wheels 18 may be placed tension or pressure rolls 20 engaging the belt 19 at the opposite side. The upper end of the belt is engaged about a pulley 21 on a counter shaft 22 mounted in bearings 23 upon the upper portion of the drying c other support. I

The intermediate portions of the web 12 are supported at appropriate points b banks ofrollers or'suppo'rting rods 24 an 25, as shown in Figure 2. These supports may be provided at appropriate intervals in order to support the'web '12 without sagging, 1t being understood that the web is sub ected to a suitable degreeiof tension to mamtam 1t in a flat and stretched condition within the drying chamber. The web is carried alternately from one drive roller 18 to the next highest idler roller 17 thence back across the drying chamber to the next highest drivmg roller 18. In this way a great linear amount of the web can be atone timecontained within the drying chamber and subjected to the dryin action of the atmosphere of the chamber. rying air or other medium is clrculated to the drying chamber by means of the fan Figures 1 and 2. The eye of the 26 shown in fan communicates directly with the surroundingatmosphere or by conduit 26'-w1th the top of the drying'chamber, while the exhaust of the fan is connected by a trunk 27 with av heating box 28 located above the 1ntermediate portion of the drying chamber and extending transversely there-across wlth its opposite ends communicating with lateral flues 29 and 30, shown in Figure 4. In the box amber or 28 is a steam or other heating coil or element 31 provided to raise the temperature of the air supplied thereto by the fan.

In the side walls 10 and 11 are provlded 1nlet ports 32 and 33 leadinginto the cells of a 50 about a riven drawin the chamber between the" horizontal parti- The machine will be found particularly 65 tions 34. The orts 32 and 33 may be provided with the ampers' or baflies 36 in order to control the amount of thehot air circu- -l lated to any particular cell.

' Opposite end rtions of the drying cham- .ber.are provide with outletflues 37 and 38,

as shown in Figure 5. These outlet flues are similar to the inlet flues and they communicats with the various superposed cells of the container through the outlet ports 39 and 40. The outlet flues open at their upper ends directly to the atmos here. The ports 39 and 40 may be'controlle by appropriate dampers or baflles 41.

The fan may be driven by an electric or other motor 42, shown in Figures land 2. This motor is provided with a pulley 43 engaged b the drive belt 44, which extends pulley 45 on the shaft 46. A second pulley 4 receive a belt 48, which is also engaged with the pulley 49 u on the fan shaft. The drive. she 46 also edly carries a small pulley 50, over which is trained the belt 51 for engaging the larger driven pulley 52 on the counter shaft 22. A belt tightener is indicated at 53. y

"The drying is done gradually through as 80 many stages, or steps as there may be cells provided, which admits, a method of obtainmg rapid and thorough drying with low temperature and minimum energy. The rollers 13 and 14 may supply a certain tension or resistance to the free movement of the material 12 and thus enable the material to be stretched b speeding up the means for with .The we or material 12 traverses the lower most cell four times, more or less; then passes upward into the succeeding cell and repeats, until it finally passes out ofthe uppermost cell in and about the rollers 15 and 16 which supply sufiicient frictional draft to withdraw the material at a constant rate of seed.

These rollers 15' and 16 may be geare to-. gather and driven by a belt 54 from the counter shaft or from other movable part.

The air, as shownby the arrows in Figure 5o 4 enters at the two ends of the uppermostcell and may be made to similarly enter both The cells and then such blast travels parallel to the surface of the'drying material to the ends of the cells, where the saturated air escapes to the atmosphere through the four exhaust 00 flues 37 and 38.

. Natural air is applied to the final stage ofdrying to neutralize the temperature and harden any wax. application for direct baling or storageof thefinished material.

on this shaft'is arranged to t e opposite end of the material.

adapted for (1 iii canvas when treated with wax compoun ds f or the tent and tarpaul in industry, but, of course, will be applicable to other long goods. The arrows show cold air entering through. the ends of the upper cell and to.the fan, therefore upper cell is entirely closed to all flues. To convert the next lower cell to cold air all of its flue connections are closed and air (as above) admitted.

through its ends, passing to the fan through 35 It is obvious that various changes and modificatio'ns may be 'made in the details of construction and design of the above specifically described embodiment of this invention without departing from the spirit thereof, such changes and modifications being restricted throughout the cells, means for drivin said last-named means, and means to supply the drying medium to said inlets.

' 2. A drier comprising a drying chamber having outlets for saturated gas at opposite ends and inlets for drying medium at opposite sides of its central portion, a cellular interior structure within. the chamber, means to movably su ort a web to be dried throughout the cells, means for driving said last named means, a heating box communicating with the inlets, and means to force gas through the heating box and subsequently throu h the inlets. 3. drier comprlsing a drying chamber having outlets for saturated gas at opposite ends and inlets for drying medium at opposite sides of its central ortion, a cellular interior structure within t e chamber, means to movably support a web to be dried ingwith the inlets, a heater within said heating box, means for circulating a gas to said heating box against the heater therein and subsequently to said inlets, and dampers in thecells of the chamber to control the en-- trance'of the heated gas.

4. A drier comprising a drying chamber having outlets forv saturated gas at the end portions thereof and inlets for drying medi 11 0 5 throughout thecells, means for driving said. last named means, a'heatlng box communicatlll um at the sides of the central portion, a cellular interior structure within the chamber,

. means to movably support material to be dried throughout the cells, means for driving said last namedmeans, and means to supply drying medium to said inlets.

. ABNER ,JUDSON LURRY. 

